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Is there a German word meaning 'a spontaneous, unscheduled, unexpected, abrupt meeting' starting with 'Knall~' ?

  • Maybe you are thinking of "Zusammenknall" depending on what you mean with meeting. But even then Knall is at the end. Nov 20, 2018 at 16:39

3 Answers 3


There is a word Knalleffekt used for a spontaneous, unexpected, sudden event (of any kind). But I am not aware of a word starting with Knall (which means bang) especially for a meeting.

You could of course create one, e.g. Knalltreffen, but then you are in the realm of poetry, not everyday or business communication. (And pay attention to what Takkat adds regarding Knalltreffen in his separate answer!)

The Duden Universalwörterbuch (some current edition) lists for Knall:

  • Knallbonbon
  • Knallcharge
  • Knalleffekt
  • Knallerbse
  • Knallerei
  • Knallfrosch
  • Knallgas
  • Knallkopf
  • Knallkörper
  • Knalltüte

as well as the adjectives

  • knallblau
  • knallgelb
  • knallgrün
  • knallrot
  • knallbunt
  • knalleng
  • knallheiß
  • knallig
  • knallvoll

None of them means "sudden meeting".

However, you can think of various words starting with Blitz (lightning). The following terms are hardly to be found in contemporaneous dictionaries, but Blitz is more productive than Knall, meaning that you can create new words without being looked at with puzzlement. So Blitzkonferenz would pass almost unrecognized as a neologism, also Blitz-Meeting, Blitzbesprechung, Blitzgespräch, Blitztreffen. I could imagine finding these words used in some (informal) business communication, e.g. in e-mails to schedule a quick meeting.

  • 7
    +1 for thinking of Blitz! Nov 20, 2018 at 12:57
  • 2
    What? No knallhart? That's the only know I knew!
    – gerrit
    Nov 20, 2018 at 14:45
  • @gerrit Yes, you are right. Interesting. Knallhart definitely should be in the listing. Nov 20, 2018 at 19:04
  • @Janka Good idea. More precisely, however, a Knall-auf-Fall-Treffen would be a meeting that takes place immediately after an important trigger event, and the peculiar thing is that it takes place immediately, not, say, after some time. So, a Knall-auf-Fall-Treffen is something more specific than a (supposed) Knalltreffen that takes place suddenly but without explicit relation to a trigger event. Nov 20, 2018 at 19:07

This needs to be mentioned:

The only context I heard of Knalltreffen is from dingy contact queries on certain red light district announcements.

Examples (links for obvious reasons not included but with Google you will find them easily if the source is not banned on your machine):

  • Suche einen aufgeschlossenen Charmeur für geile Knalltreffen.
  • Suche für unregelmäßige Knalltreffen gesunde, schlanke Herren.

In these cases Knalltreffen is used for the original intention behind such contacts where knallen is used in its vulgar meaning for having sexual intercourse. If any of these meetings follow they may be spontaneous but not really unscheduled, or unexpected. I can not exclude that the meaning may be regionally different, but where I live it is definitely not a word people know.

  • Interesting. I did not know that the word is indeed in use. Nov 21, 2018 at 14:24
  • 1
    Interesting indeed. I would add, that the verb knallen in its meaning of to have sexual intercourse is rather obscene in german, just as its literal to bang in english. Nov 21, 2018 at 14:44
  • @jonathan.scholbach - Good addition! It is all rather offensive language, so no wonder we know nothing about it ;)
    – Takkat
    Nov 21, 2018 at 15:11

I'm not aware of a substantive, associating sudden occurence with Knall. I also find this plausible, since Knall more often than not also indicates the termination of something (like a bursting balloon).

So Blitz- as in Blitzkrieg is the more likely choice (and its also used in English if I consider flash mob).

There is also the term ad hoc leaned from Latin (Duden gives the meaning aus dem Augenblick heraus, probably translated to instantaneous) if just the improvised nature shall be pointed out, so the usual scheduling activities with notification weeks before are bypassed.

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